/*
 * Bittorrent Client using Qt4 and libtorrent.
 * Copyright (C) 2006  Christophe Dumez
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link this program with the OpenSSL project's "OpenSSL" library (or with
 * modified versions of it that use the same license as the "OpenSSL" library),
 * and distribute the linked executables. You must obey the GNU General Public
 * License in all respects for all of the code used other than "OpenSSL".  If you
 * modify file(s), you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 *
 * Contact : chris@qbittorrent.org
 */

#ifndef TRANSFERLISTFILTERSWIDGET_H
#define TRANSFERLISTFILTERSWIDGET_H

#include <QListWidget>
#include <QFrame>

QT_BEGIN_NAMESPACE
class QListWidgetItem;
class QVBoxLayout;
class QDragMoveEvent;
QT_END_NAMESPACE

class TransferListWidget;
class TorrentModelItem;

class LabelFiltersList: public QListWidget {
  Q_OBJECT

private:
  QListWidgetItem *itemHover;

public:
  LabelFiltersList(QWidget *parent);

  // Redefine addItem() to make sure the list stays sorted
  void addItem(QListWidgetItem *it);

  QString labelFromRow(int row) const;
  int rowFromLabel(QString label) const;

signals:
  void torrentDropped(int label_row);

protected:
  void dragMoveEvent(QDragMoveEvent *event);
  void dropEvent(QDropEvent *event);
  void dragLeaveEvent(QDragLeaveEvent*);
  void setItemHover(bool hover);
};

class StatusFiltersWidget : public QListWidget {
  Q_OBJECT

public:
  StatusFiltersWidget(QWidget *parent);

protected:
  QSize sizeHint() const;

private:
  bool m_shown;
};

class TransferListFiltersWidget: public QFrame {
  Q_OBJECT

private:
  QHash<QString, int> customLabels;
  StatusFiltersWidget* statusFilters;
  LabelFiltersList* labelFilters;
  QVBoxLayout* vLayout;
  TransferListWidget *transferList;
  int nb_labeled;
  int nb_torrents;

public:
  TransferListFiltersWidget(QWidget *parent, TransferListWidget *transferList);
  ~TransferListFiltersWidget();

  StatusFiltersWidget* getStatusFilters() const;

  void saveSettings() const;
  void loadSettings();

protected slots:
  void updateTorrentNumbers();
  void torrentDropped(int row);
  void addLabel(QString& label);
  void showLabelMenu(QPoint);
  void removeSelectedLabel();
  void applyLabelFilter(int row);
  void torrentChangedLabel(TorrentModelItem *torrentItem, QString old_label, QString new_label);
  void handleNewTorrent(TorrentModelItem* torrentItem);
  void torrentAboutToBeDeleted(TorrentModelItem* torrentItem);
  void updateStickyLabelCounters();
};

#endif // TRANSFERLISTFILTERSWIDGET_H
